Gersprenz

No "no mow May" for the "Wasserverband Gersprenzgebiet" (a union of 21 municipalities along the Gersprenz (length 62km), responsible for maintenance and re-naturation of the Gersprenz). Well, perhaps they will learn. (And stop canalising this part of the Gersprenz, but instead leave it alone!)
The cabin in the thumbnail was in use when height and speed of the rivulet was measured manually. Just recently it received a new outfit, perhaps they will start to use it again?
At the cabin is a (derelict) stair, where Omo in his better days loved to go into the water (and subsequently refuse to come out again). See here for an example.